Coffee, tea and soft-drink stains are generally removed in the wash, while stains from candle wax, salad dressing, and peanut butter require special treatment. Explain why?

Where were the best viking swords manufactured? a China b Europe c India d Netherlands

What are two examples of decomposers

Given a non-enzymatic reaction, how would you determine the forward rate constant (k1) ?

At which temperature is the vapor pressure of ethanol equal to 80. kPa? (1) 48°C (3) 80. °C (2) 73°C (4) 101 °C

Matter is classified as a (1) substance, only (2) substance or as a mixture of substances (3) homogenous mixture, only (4) homogenous mixture or as a heterogeneous mixture

Which of the following is the best description of covalent bonding? 1. Bonding that occurs between elements with similar electronegativities, and with transfer of electrons. 2.

You are asked to smell a solution in a beaker. what is the best way of doing this?

The specific gravity of iron is 7.87, and the density of water at 4.00 ∘C is 1.00 g/cm3. You can use this information to find the density of iron. Find the volume occupied by 4.50 g of iron.

The volume of a gas is 93 ml when the temperature is 91? c. if the temperature is reduced to 0? c without changing the pressure, what is the new volume of the gas?

15.434 g of kcl (m. m 74.55 g/mol) is dissolved in water up t a total volume of 500.0 mL. the density of this solution is 1.02 g/mL. what is the concentration of he solution in molality